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Become the Music

Light, robust and supremely comfortable, M500 hi-fi headphones are designed for people who are serious about sound. The unique technologies that underpin KEF’s passion for creating the most natural possible sound, immerse you in the intense clarity and detail of the piece played live: vivid, spacious and exquisitely balanced.

Pure Sound Performance by KEF

Sweet, natural and beautifully balanced, KEF’s 40mm neodymium driver is tuned to deliver full range high definition response from 20Hz to 20kHz. Half the weight of conventional copper wire, the copper-clad aluminium wire voice coil improves HF response to enhance musical subtleties and detail. Each aperture in the tuning plate mounted over the drive unit in the acoustic chamber is precisely positioned to optimise clarity, dynamics and bass weighting. Opera or hip-hop, on the move or just chilling, you make the most of every note.

Minimum Noise

An acoustic sealing ring in each "racetrack" ear cup provides an excellent seal that cuts out extraneous noise while minimising sound leakage. All you hear is your chosen track in its purest form, while those around you hear virtually nothing.

Fits all your Devices

Compatible with most smartphones, computers and other mobile devices. Featuring an integrated in-line microphone and remote control on a tangle-free flat cable for iPhone and other Apple products, it allows you to operate the play functions or switch between calls and music. Just plug in and relax for First Class entertainment.

General Features:

Integrated microphone with adjustable volume controls for use with iPhone, Android, Blackberry and Windows Smartphones

Adjustable headband for comfortable listening sessions

Primary Color: Silver (Aluminum)

Accent Color: Black

Primary Material: Aluminum

Manufacturer Model Number: KEF M500

Manufacturer Part Number: KEF SP3821BA (M 500)

Authorized Internet Dealer

1-year Manufacturer's Warranty

Product Specifications:

Main Driver Size: 40mm

Frequency Response: 20 Hz - 20,000 Hz

Sensitivity: 103 dB

Nominal Impedance: 32 Ohms

Cable:

Detachable: No

Cord Length: 4 ft. (1.2m)

Plug Size: 3.5mm and 1/4" adapter

Headphone Design

Headphone Type

Headphone type refers to the construction of the headphones.

Around the Ear means that the headphones wrap around the ear to provide a secure fit. This is most often seen in active and sports headphones.

Around the Neck means that the headphones wrap around the neck. This is also seen in active and sports headphones.

Earbuds means that the right and left sides of the headphones are separated and will fit securely into the ear. These are small, compact, and user friendly.

Over the Head headphones mean that the right and left speakers are connected with a support that goes over the head and rests on top. This is the typical headphone type.

Over the Head

Earpiece Design

This is the design of the earpieces on the headphones. Some headphones go inside the ear, while others rest on the outside of the ear. This helps you know exactly what type of headphones you will be receiving.

In-Ear: The ear buds go into the ear. Most often, the right and left ear buds are two separate pieces.

Enclosed-Ear: Usually are found on the larger headphones. They rest on top of the ear and have padding for comfort, as well as enclosing the ear to the speaker. This type of headphone helps to filter out surrounding noise.

On-Ear: This type of headphone involves the speaker sitting gently on the ear without going in the ear or sealing it off.

On-Ear

Specifically For

Some headphones can use an IR Transmitter in your vehicle, while some can be plugged into your media device and be used on the go or at home.

Home/Portable

Lifestyle

This is the lifestyle that the headphones are designed for. Each style has unique features that make it perfect for particular people.

Athlete:
Designed for those that are active. These headphones are made to stay in the ear during workouts. Whether you frequent the gym a lot or go running outside in the fresh air, these active style headphones will be your best friend.

Audiophile:
For those that need the best in music quality. These audiophile headphones are engineered to produce high fidelity and accurate audio replication.

DJ:
Disc Jockeys (DJs) require a special type of headphone that can meet their professional needs. These headphones are durable, loud, and will often allow for one ear listening.

Fashion Enthusiast:
For those that want to make a fashion statement with their headphones. Not only are these headphones designed with great sound quality in mind, but also great looks!

Gamer
This lifestyle speaks for itself! If you love video games and want a pair of headphones that will deliver explosive sound and allow you to communicate with others, this is where you need to shop!

Music Lover:
These headphones are made to sound great. They are designed to produce rich, brilliant sounds that will play your music in a manner that the artists would appreciate. These headphones are for those that love music.

Musical Production / Recording Artists:
You're a music creator. Whether you're producing and mixing it down or in the studio recording yourself, you need a pair of headphones that will reproduce the music perfectly without any coloration. Look here for reference quality studio monitoring headphones.

Student:
Headphones need to be affordable and durable to keep up with the student lifestyle. A variety of styles can be considered a pair of student headphones.

Traveler:
Those that often find themselves on planes or on the road a lot. These headphones are compact, lightweight, and have a portable design. Some of the headphones in this lifestyle will feature noise cancellation technology that will help shut out outside noise.

AudiophileTraveler

Acoustic Principle

The basic design of the headphones. There are 3 different types:
Open: Have ports that allow air through the back of the diaphragms, enabling the headphones to sound like the music is coming from an outside source.
Closed: Completely sealed and have no air passing through the diaphragms. Sounds like you are in a closed off room.
Semi-open: Have slots or ports in the back of the cup and are partially open. This allows for a mixed sound between an open and closed headphone.

Closed

General Features

Noise-Canceling

Noise Reduction technology removes unwanted noise from a signal. Background or ambient noise can be removed to produce clearer speech and enhanced hearing. Typically these Active Noise Canceling (ANC) headphones are powered and use batteries to activate the noise canceling technology. Also referred to as Noise Reduction or Noise Cancellation.

No

Headphone Connection

This is how the headphones connect to the audio source.

Corded means that the headphones use a cord to transfer the audio signal.

Wireless means that the audio signal is transmitted wirelessly to the headphones.

Corded

1/4" Stereo Jack Adapter

Some headphones will come with a 1/4" stereo jack adapter to connect the usual 3.5mm jack to a 1/4" stereo plug.

1/4" Stereo jack is a larger audio jack that select electronics have.

Yes

Volume Adjustment

Volume Adjustment means that the headphone (independent of the source) can adjust the playback volume. Many headphones and ear buds have in-line volume control, which allows adjusting the audible volume from a switch on the headphones cord. Other headphones have a volume knob on the headphone can.

Yes

Built-In Microphone

This means that the headphones or earbuds have a built-in microphone. This can be a microphone on the cord, built into the headphone, or even a boom microphone. These mics can be used for music devices like iPods, for Smartphones to make and receive calls, or for gaming purposes.

Yes

Frequency Response

The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).

20 - 20,000 Hz

Sensitivity

An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".

03 dB

Driver Size

This refers to the diameter of the driver (speaker) on each side of the headphone.

40 mm

Driver Type

The physical design of the driver in the headphones.

Dynamic

Impedance

The opposition to electric current, a higher impedance means a higher electrical resistance. This is measured in ohms.

Customer Testimonial

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: KEF M500

KEF M500 Hi-Fi Stereo Headphones

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